A single yellow line on a two-lane, two-way road serves the  same purpose.   Some jurisdictions use yellow lines on one-way roadways or divided  highways to indicate the left edge of the roadway. . single yellow line on a two-lane, two-way road serves the  same purpose.   Some jurisdictions use yellow lines on one-way roadways or divided  highways to indicate the left edge of the roadway. .
In ancient Rome, the genius (plural in Latin genii) was the guiding spirit or tutelary deity of a person, family (gens), or place (genius loci). The noun is related to the Latin verb genui, genitus, to bring into being, create, produce, as well as to the Greek word for birth.
The nature of scientific genius is to question what the rest of us take for granted, then do the experiment.. Replace science or scientific with science fiction in these statements, and you concisely define what SF does - and the value of its study becomes apparent.